Pneumatic-tool support



Patented Mar, 1, 1921.

2 SHEETS'SHEET lkw \w t M \w M Q l H & m M m o \N \N mm v 1 w a. O Q Qfli ,MN Q Q fir Q x a 3% Q w \w m UNETEB STATES eerea'r o FicE.

CHARLES A. rnvz, or nUBuQUE, IOWA.

This invention relates to a pneumatic hammer supporting device, anobject of which is to provide a supportlng device that will support anair hammer in such.

relation to a ship or other structure as to relieve theoperator of theweight of the hammer. W

Another object of this device is to provide a pneumatic hammersupporting device which rigidly supports the hammer against movementfromthe ship or other structure; but allows universal adjustment in a planeparallel with the outer surface of the ship, thereby permitting theoperator to conveniently adjust the hammer to a selected securing devicein the ship.

A further object of the invention is to provide a pneumatic hammersupporting device comprising interchangeable components to permit thedevice to be rigged in such relation to the ship as to allow the deviceto support the hammer against movement away-from the bottom ofthe shipwhen riveting at this portion of theistructure. An additional object ofthis device is to provide a pneumatic hammer supporting devicecomprising means for controlling the movement of the hammer independentof the supporting frame. I

It is also an object of this invention to provide a pneumatic hammersupporting device of generally improved construction whereby the devicewill be simple, durable and inexpensive in construction, as well asconvenient, practical, serviceable and efli.

cient infit-s use.

Withthe foregoing and other objects in vlew which will'appear asthedescription proceeds, theinvention resides in the combination andarrangement, of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise.embodiment of th i ti herein disclosed, may be made within the scopeofwhat is claimed without departing from the spiritof the invention.

This invention has beenillustrated in its PNEUMATIC-TOOL SUPPORT.

Specification of Letters Patent.

Application filed November 28, 1919. Serial No. 341,343.

preferred embodiments in the accompanying.

drawings, wherein I Figure 1 is an end view of the supporting deviceshowing it applied to the side plates of a steel ship structure. 7

Fig. 2 is a front view of'the device.

Patented Mar. 1, 1921.

Fig. 3 is a horizontal sectional view taken I on the line 33 of Fig. 2.

Fig. 4 is a detail view of the hammer holder, the hammer being removed.Fig. shows the device assembled for use in riveting the bottom plates ofa ship structure. V

Fig. 6 is an elevation of the adjustable foot 'lever.

Referring to the drawings there are shown the usual steel plates Pemployed in'ship building, and with which this device co operates. Theinvention. comprises an an gle plate or bracket 1 having a plurality ofapertures 2 formed in one leg thereof for the reception of bolts orother securing devices 3; which rigidly secure the bracket 1 to. theplates P forming the hull of a ship. A tubular hangeror supportingmember 4: is secured to the outstanding leg of the bracket 1, andextends downwardly and outwardly and terminates at its lower end into abearing member 6, which is parallel with the side of the ship and hasplurality of apertures T'fOrmedtherein. The hanger or supporting member4 is held against outward movement with relation to the ship by means ofa brace or truss rod .8 that is secured at its upper end to the lowerend of the bracket 1, and the opposed 'en'd of this brace rodis securedto the lower portionof the hanger 4, while a strut or standard 9 spacesthe intermediate portion of the truss rod 8 from the hanger l, therebyfur?- ther reinforcing the structure.

A supporting frame cotiperates withfthe hanger, and comprisesperpendicularly dis posed tubular-members ll and 12 which are united attheir inner ends by a coupling 13 and their outer ends are braced by ateetangular framel which is rigidly secured to the tubular members orpipe sections 11 and. V

12. One of the tubular members 11 has a spool 15 rotatably mountedthereon and disposed within the frame 14. "A collar 16 is carried bythis tubular -member, which collar supports spaced pulleys or sheaves17. and

the outer end of this tubular member has 40 cured to the hammer handleby suitable setrunnion' 18 extending therefrom. Detachably secured tothe tubular member 11,

which is remote from the trunnion 18, is a tubularextension 19, and alever 20 'is fulcrumed at the outer end of this extension. An extensionrod 21 is slidably mounted Within the tubular extension 19 and has atrunnion 22 formed at the outer end thereof, while the intermediateportion of the rod 21 has a collar 23 rigidly secured thereto, and

c which is operably connected with the lever 20 through theinstrumentality of a link 23, and the outer end of this lever 20cooperates with a stop or locking member 24 carried by the hanger 4. Asupporting arm 25 is slidably mounted in the tubular members 12 andcoupling 13, and spaced fingers 26 are secured to the arm adjacent itsopposed ends.

Spaced brace lines or cables 27 are carried by the fingers 26, and theseflexible elements or I cables are trained over the sheaves 17 to therebyprovide reinforcing or bracing means for the arm 25 under conditions tobe hereinafter set forth. A hammer holder or head 28 is detachablysecured to one end of the arm 25 by a pin or other suitable securingdevice 28, and this head is bifurcated to dering 32 of the member 34 areprovided with slots 35 forthe reception of a transversely disposed pin36 carried by a block or hearing 37 securing devices. The slots 35permit the hammer to vibrate, but support the hammer in the head 28. Inorder to lock the collar or ring 32 within the head 28, there areprovided latches 38 which are pivoted to the sides of the head 28 andengage the trunnions 31 to hold them in recesses 30, while leaf r thetrunnions springs 39 are secured to the head 28 to engage and lock thelatches in engagement with 31. To adj ustably support the arm 25 inworking relation to the side of the ship, there is provided aitrackmember 40 whichjis rigidly secured to the bracket 1 and is; parallelwith the side of the ship; while the outer end of this track issupported by a brace rod 41 that extends from the outer end of the track40 to the upper terminal of the bracket 1.- The arm 25 is supported by ablock and tackle arrangement which includes a traveler or carriage 42mounted for.

movement along the track 40, and block 43 r is carried by the carriage.A similar block 44 is attached to the outer end of the arm.

25, and a pulley 45 is supported at the inner 'ing member 6, and

posed between end of the track 40. One end of a cable or other flexibleelement 46 is detachably secured to the outer end of the track 40, asshown at 41, and from this point the cable extends downwardly andthrough the block 44, then upwardly through the block 43, again downthrough the block 44, and then up through the block 43, around thepulley 45 and downwardly around the spool 15. From this point it extendsdownwardly and is secured to a weight 46, which: weight serves tobalance the entire hammer supporting arm.

The operation of the device as disclosed in Figs. 1, 2, 3 and 4 is asfollows:

The bracket 1 is rigidly bolted to the side plates P of the ship. byplacing the bolts 3 into the usual rivet holes of these plates, and thenthe trunnion or point. 18 is placed in a similar hole, thereby pivotallysupporting the inner end of the arm supporting structure. Now, thetrunnion or point 22 is alined with a selected hole 7 of the bearthelever 20 is moved outwardly which moves the trunnion 22 into the hole 7,thereby pivotally supporting the outer end of this structure; and theouter'end of the lever 20 is placed'behind the locking member 24, whichaction locks the extension rod 21 in its extended position; The hammer His positioned in the andtackle is adjusted, thus providing a devicewhich adjustably supports the hammer H in operable relation with theside of the ship, and allows a relatively great range of movement of thehammer and at the same time relieves the operator of the weight of thishammer. In Fig. 5 the device is shown arranged for use in riveting theplates on the bottom of the usual steel ship structure, in whicharrangement the supporting member 4 is removed and a pedestal supportingmember is substituted. The tubular'extension 19 is removed and a longerextension'19 is employed, and this tubular extension is placed over avertically disposed rod or pipe 47 supported by a suitable pedestal orblock 48. This rod 47 has, a sleeve 49 slidably mounted thereon, andpinsor trunnion 50 extend laterally fromthe sleeve into slots head 28and theblock 5 51 formed in the bifurcated end of a lever 52. A. post 53 issecured to the pedestal 48 in spaced relation to the supporting pipe 47,and the lever 52 'is fulerumed to this post, as shown at 54, and a pawl55, having a handle member 56, is pivoted to the lever 52 andcofiperates with. a rack or locking member 57 carried by the port 53.Surrounding the pipe or support 47 and inter the lower end of ,theextension 19' and the upper terminal of the sleeve 49 is acompressionspring 58 which serves as a cushion between the sleeve andextension. A finger 59 is detachably seof the straps 33, and the innerend of the lever 62 is pivoted to the block 37 carried by the hammerhandle, as shown at 64. A. rocking arm or member 65 is 'fulcrumed to thelever 62, as shown at 66, and the remote end of this arm carries a pin67 which is adapted to engage the usual air valve lever or handle L ofthe hammer H. The arm 65 is pivotally connected to a link 68 that isoperably connected to a bell-crank handle member 69, and a retractilespring 70 is attached to the lever 62 and link 68 to normally hold thepin 67 from engagement with the valve lever L W hen employing thisstructure the trunnion 18 is alined with one of the rivet holes of thebottom plates of the ship and the outer end of the lever '52 is moveddownwardly by the foot of the operator, which causes the point ortrunnion 18 to move into the selected rivet hole. Then the handle 56 isgrasped to move the pawl into engagement with the rack 57, therebylocking the device rigidly to the ship. Now the arm 25 may be adjustedlongitudinally and the flexible cables 27 will move freely over thepulleys 17, and the roller 60 will readily travel along the bottom ofthe boat, thus servin to brace the arm relative to the boat structure.After the tool or die of air hammer H has been alined with a selectedrivet, the hammer may be moved upwardly against the rivet by simplypressing downwardly on the free end of the lever 62, and the hammeroperated by merely gripping the handle lever 69, which causes the pin 67to engage the valve lever L and open the usual air hammer valve.

When the hammer H has been moved a relatively great distance from thesupporting frame 14 it is necessary to provide additional supportingmeans, and to this end a collar 71, having an eye 72 formed thereon, issecured to the arm 25, and a rod 73 is detachably secured thereto. Asecond rod 74 is slidably secured to the rod 73, and an adjustablecollar 75 is secured to the rod 73, which collar engages the upper endof the rod 74;. This arrangement provides an adjustable supporting legthat may be conveniently attached to the arm 25 when desired.

In Fig; 6 an adjustable foot operating device is disclosed which isadapted' to be employecl to support the hammer H when there issuliicient distance between the ground and the bottom of the boat topermit its use. Under this condition the hand lever 62 and adjustablesupporting leg is removed and the foot operated device is substituted bysimply attaching the rod 76 to the block 37 of the hammer H. The rod 76is adjustably secured to a rod 77, which, in turn, is pivotallyconnected to a foot lever 78 that is fulcrumed on a pedestal 79. Thus bysimply pressing the foot on the free end of the lever 78 the hammer Hmay be forced against the selected rivet, and the valve lever L operatedinthe usual manner by hand. lVhen the roller 60 encounters a seam orother projection on the plates of the ship then this roller may be movedaway from the plates by simply turning the outer end of the finger 59about its joint 61.

Having thus described my invention what is claimed is 1. A device of theclass described including a supporting member, a supporting framepivotally secured to the supporting member and the structure beingoperated upon, an arm slidably secured to the supporting frame, anautomatic hammer holding-head secured to the arm, and means for securingthe said hammer in the said head in operable relation with the saidstructure.

2. A device of the class described including a supporting member, asupporting frame pivotally secured to the supporting member and thestructure being operated upon, means for attaching. and detaching thesupporting frame with respect to the supporting member and the saidstructure, an arm slidably secured to the frame, ahead carried by thearm, means for pivotally securing an automatic hammer to the head, andmeans for adjusting the said arm with respect to the said structure.

3. A device of the class described including a supporting member, a'supporting frame adapted to be pivotally secured to the supportingmember and the structure being operated upon, a lever operably connectedwith the supporting frame andv adapted to coiiperate with the supportingmember for locking the supporting frame in operable relation with thesupporting member and the said structure, an arm slidably. secured tothe supporting frame, a head carried by the arm, means for pivotally andslidably securing an automatic hammer to the said head in operablerelation with the said structure. 7 I

4-. A device of the class described including a supporting member, asupporting frame comprising perpendicularly disposed tubular membersunited by a central tubular coupling, a rectangular frame adapted tobrace the outer terminals of the tubular 7 members, a tubular extensiondetachably sepivotal relation to the supporting member and the saidstructure, a sheave carried by the supporting frame, an arm slidablysecured t0 the supporting frame, spaced fingers carried by the arm, aflexible cable secured to the fingers and extending over the sheave, ahead carried by the arm, and means for operably securing an automatichammer to the said head.

5. A device of the class described including a supporting member, asupporting frame pivotally secured to the supporting member and thestructure being operated upon, an arm slidably secured to the saidframe, a head secured to one terminal of the arm, said head beingbifurcated to provide spaced ears having alined recesses formed therein,a collar adapted to slidably receive an automatic hammer, alinedtrunnions extending from the collar and adapted'to be received Withinthe said recesses to pivotally attach the collar to the said head, latchmembers pivotally secured to the head and adapted to engage thetrunnions to lock the c0l-- lar in operable relation to the head, meansfor securing the latch members in their.

locked position, opposed straps pivotally secured to the said trunnions,and means secured to the remote ends of the straps for securing theautomatic hammer in operable relation to the head.

6. A device of the class described including a supporting member, asupporting frame pivotally secured to the supporting member and thestructure being operated upon, an arm adjustably secured to the saidframe, a head carried by the arm, a collar pivotally secured to the headand adapted to slidably receive an automatic hammer, a strap pivotal'lysecured to the collar, a lever fulcrumed to the opposed end of the strapand pivotally secured to the said hammer, a rocking member pivotallysecured to the lever, a pin carried by the rocking member and adapted toengage the usual valve lever of the automatic hammer, a link pivotallysecured to the rocking member, and a handle member tulcrumed to thelever and pivotally connected with the link.

In testimony as my oWn, I have hereto ,aflixed my signature in thepresence of two Witnesses CHARLES .A. KUNZ'. v Witnesses I. M. ALEHR, L.PIER.

that I claim the toregoing

